XmlDocument xmlDoc = new XmlDocument();
            string filePath = Path.Combine(AppContext.BaseDirectory, "Configuration", sDir, string.Format("{0}.xml", sXmlName));
            StringBuilder builder = new StringBuilder();
            using (FileStream fs = File.Open(filePath, FileMode.OpenOrCreate))
            {
                using (StreamReader sr = new StreamReader(fs, Encoding.UTF8))
                {
                    builder.Append(sr.ReadToEnd());
                }
            }
            if (builder.Length > 0)
                xmlDoc.LoadXml(builder.ToString());      //
            return xmlDoc;
注意:
xmldoc.load可以加载文件,比如:xmldoc.load("c:\\a.xml");
而xmldoc.loadXML是加载xml格式的字符串,比如:xmldoc.loadXML("<aab>aaa</aab>")原文:http://www.cnblogs.com/DSC1991/p/7911215.html